Siemens HED41B090 - 90 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens HED41B090 is a 90 A, 277 V, 1-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers.

Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping prevent loose contacts that can lead to interruptions or unreliable protection over time.

The thermal-magnetic trip unit combines precise thermal overload protection with fast magnetic response for short circuits, delivering stable, repeatable protection performance across varying loads and conditions.

Designed to be compatible with matching OEM Siemens load centers and panelboards, this breaker ensures proper fit, electrical characteristics, and reliable coordination within your distribution system.

Ideal for residential, commercial, and light industrial applications—whether you’re upgrading a service panel, replacing a failed breaker, or expanding circuits in a 277 V environment.

Key specifications at a glance: 90 A rating, 277 V, 1-pole, bolt-on mounting, molded case construction, intended for branch circuit overcurrent and short-circuit protection in panelboards and load centers.

• What it solves: Reliable single-pole protection for branch circuits up to 277 V, preventing overloads and short circuits from compromising safety and uptime.
• Where to use: Siemens-compatible panelboards and load centers in homes, offices, retail spaces, and light industrial facilities.
• Why bolt-on matters: A secure mounting method minimizes bus connection issues and mechanical vibration–related wear over time.
• How it compares: Provides a purpose-built Siemens solution that fits OEM equipment without adapters, preserving intended trip characteristics and system coordination.
• Care and installation tips: Verify panel compatibility, follow installation torque guidance from the manufacturer, and match the breaker rating to the protected circuit’s requirements.

Purchase with confidence from AmpState—the Siemens HED41B090 is ready to install in compatible panels, delivering dependable protection for critical electrical circuits.